<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="../react18/react.development.js"></script>
    <script src="../react18/react-dom.development.js"></script>
    <script src="../react18/babel.min.js"></script>
  </head>
  <body>
    <div id="app"></div>
    <script type="text/babel">
        function Header(){
            return <header>
                <h1>一</h1>
                <h2>二</h2>
                </header>
        }
        function Content(){
            return <div>
                <p>一</p>
                <p>二</p>
                </div>
        }
        function App(){
            return <div>
                <Header></Header>
                <hr />
                <Content />
                </div>
        }
      ReactDOM.createRoot(document.getElementById("app")).render(<App />);
    </script>
  </body>
</html>
